Lock.



A.. e. ANDERSON.

LOCK. APPLICATION FILED Nov. 2o, 1911.

LOSHQ. Patented Sept. 17, 1912.

locked from one side of the door without ANDERS GUSTAF ANDERSON, 0F NEWYORK, N. Y.

Loon

speoioation of Letters Patent.

Application filed November 20, 1911.

patented sept. fr, rais..

Serial N0. 661,300.

1' New York and State of New York, have invented certain new and usefulImprovements in Locks, of which the following is a specification.

This invention relates to locks and more particularly to that type oflock which can be manipulated at one side of the door only in suchmanner as to hold the lock against operation. f

One of the objects of the invention yis the production of an inexoensivedurable lock with the fewest possible parts, and capable of beingmanufactured with the least amount of machine and hand fitting.

Another object is to produce a lock adapted for use in any position,which can be the use of a key or extra latch.

A further object is the production of a lock of this general characterwherein the locking part is held against misplacement, either inoperative or inoperative position.

The invention consists 1n the parts, imgrovements and combinations'hereinafter escribed and claimed for accomplishing these objects.

In the accompanying drawings, which illustrate the invention and arehereby made a part of this specification, Figure .1 is a partial centralplan section of the invention; Fig. 2 is a front view of the lock shownin Fig. 1, parts being omitted; Fig.. A3 is a rear view of Fig. 2 withthe back wall cut away and some of the parts in achanged position; Fig.4 is a section on the line 4-4 of Fig. 2, looking in the. direction ofthe ar rows; and Fig. 5 is a section o n the line 5-5 of Fig. 2 looklngin the dlrection of the arrows.

casing is set into the door 14 in any suitable or usual manner, andhandles 15, 15a are provided at opposite sides of the door.

These handles are secured to square stemsl 16, 16'* as by means ofscrews 17, and thestems are secured together so 'as to be capable ofindependent rotation by means o a threaded extension 18 on one stemtaking into a socket screw thread in the other stem. The engagementvbetween the extension and socket screw threads is loose and the endmovement resulting from relative turning of the stems is unimportant.

The stems project through openings in the back wall and cover plate ofthe casing, and hubs 19, 19 journaled in this wall and plate are secureddirect-ly on the stems inside the casing. A single arm lever 20 isformed on the hub 19 and double-arm lever 21 is formed on the hub 19a. i

' The bolt 13 has a yoke 22 formed thereon atts rear end. This yoke isshown as a substantially rectangular or oblong frame extending above andbelow the bolt. The levers 20 and 21 are located within this yoke. Therelation of the single-arm lever 2O to the oke is such that when turnedin one direction by its handle, itA engages with i the forward innerwall of the yoke, so as to constitute a thrust member barring or lockingthe bolt in thrown-or projected osition against retraction. But when tis lever is turned in the opposite direction by means of its handle, itengages with the back inner wall of the yoke so as to retract the bolt.`The yoke is provided centrally of its front inner wall with a projectionor stop 23, which preventsthe lever being turned past locking orapproximately horizontal position. In order that the handle 15, whichoperates this lever', may be turned in the desired direction, that is,with the nose of the lever 20 below the stop 23, to lock or retract thebolt; irrespective of the position of lthe lock With reference to thedoor, the lever 2O is reversible on the eol stem-16, so that it mayoperate at either side of the stop 23. .This is accomplished by slippingthe `hub 1.9 and arm 20 oii" the square stem, reversing the lever andreplacing it. The path of the lever 20 in either direction is indicatedby the dash- -and-dot line 30. 4

The double arm lever 21 is so related to the yoke that it is incapableof locking the bolt, but one arm or the other will enga e with the backWall of the yoke when t e' handle 15 is turned in either direction, soas to retract the bolt` A vertical plate 24 is located Iat the side ofthe yoke 22, with its rear edge A25 adjay ner wall ofthe yoke,

centbut partially ,in rear of the front inin order to prevent the latterfrom traveling plate. As shown, this edge of the plate 24 is formed soas to afford inclined edges or surfaces intersecting the path of thearm'20 to and from locking position, so that the movement of the armnecessitates the displacement of the plate. The latter is pivot-V ed onone screw 12 and has a lug 26 which contacts with the other screw 12a asa vlimit stop. A single coil spring 27 is interposed between an offsetseat 28 on the bolt and a seat- 29 on the plate 24. This spring actsboth to project the bolt and to press the plate 24 against the lowerstop screw 12a in the position shown in Figs. 2 and 3.

In operation, the bolt may be locked in thrown position at one side ofthe door only, by means of the handle 15 and the single arm lever 20.This handle and lever alsov enable the bolt to be retracted, at theother side of the door, the bolt may be retracted, when it is not lockedby the single arm lever 20, by means of the handle 15 and the double armlever 21. Movement of the handle 15a in either direction will accomplishthis result, but will not lock the bolt. The spring-pressed platel 24acts as yielding detent, over which the arm 20 must ride in order toreach or leave the locking position shown in Fi 2. The plate is soformed that it yieldingly holds the lever 2O either in or out of lockingposition, as the case ma7 be, so that accident-al displacement of theever is revented.

I-Iaving descri ed m invention what I desire to secure by tters Iatentand claim is:

1. In a lock, the combination of a bolt, a spring for throwing the same,handles at opposite sides of the lock having independently rotatablestems, a single arm lever on one of said stems constructed and arrangedto directly hold the bolt in locked position when its stem is turned inone direction and also to retract the bolt when its stem is turned inthe opposite direction, and a double arm lever on the other stemconstructed and arrangedto retract the bolt when said stem is turned ineither direction, but incapable of locking the bolt.

2. In a lock, the combination of a bolt having a yoke, handles atopposite sides of the lock having independently rotatable stems, an armon one of said stems located within they yokeyand constructed andarranged to engage with the front of the yoke to t row and directl holdthe bolt in ylocked position and with t e back of the yoke to retractthe bolt, and a double arm lever on the other stem alsolocated withinsaid oke and adapted to engage with the back o the yoke when its stem isturned in either direction to retract the bolt.

past the edge of the` 'locking position,

3. In a lock, the combination of a bolt, a handle, an arm carried by thehandle constructed and arranged to throw. and directly hold the bolt inlocked position, la plate pivoted to vone side of said'bolt and saidarm, having the edge face of the arm,'being positioned so that thelatter displaces it in moving to and from and means pressing said platevagainst the arm so as to retainA it in either position.

4. In a lock, tional casing, thereof together, a bolt, a handle, a leverconnected with the handle andlconstructed and arranged to loc-k the boltin thrown screws connecting the sections thereof bearing against the lposition,/a yielding detent for holding the arm positioned so that thearm rides against and displaces it, said detent being pivoted on one ofsaid screws and engaging with another thereof as a limit stop, and aspring acting on said detent iii opposition to thev arm.

5. In a lock, the combination of a bolt having a yoke, a with the handleand located inside said yoke,

said lever being constructed and arranged.

to engage with the front part of the yoke to lock the bolt in thrownposition and with the back part of the goke to retract the bolt and aspring-presse plate `for yieldingly holding the ever, being pivotedindependently of the bolt by the side of said yoke with an edge inposition intercepting the A path of said lever to and from lockingposition.

6. In a lock, the combination of a bolt, a handle, a lever connectedwith the handle and constructed and arranged when moved in one directionto lock the bolt in thrown posit-ion and when movedin the oppositedirection to retract the bolt, a yielding detent foi holding saidflever,and a spring interposed between' said bolt and detent so as to actuateboth.

7. In a lock, the combination of a bolt, handles at o posite sides ofthe lock, having independent y rotatable stems, a single arm lever onone of said stems constructed and arran ed t0 throw and directly holdthe bolt in loc ed posit-ion when its stem is turned in one direction,said single arm leverA being also adapted to retract the bolt when itshandle, a lever connected" stem is turned in the opposite direction, a

double arm lever on the other stem con lstructed and arranged to retractthe bolt and locking arm mounted on said stem, sai

bolt having a portion arranged to `be engaged by said arm to retractthebolt and a Signed at the borough of Manhattan in portion arranged to beengaged by the arm the county of New York and State of New to lock thebolt in thrown position, said bolt York this 18th day of November A. D.1911. 10 v being further provided With a central stop ANDERS GUSTFANDERSON. preventing' said arm passing locking po- Witnesses: e sition,said arm being reversible on said stem H. C. KARLSON,

so as to operate at either side of said stop. W. H. GBE.

